IBM 8270, Инструкция по установке и обслуживанию

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There are no customer-serviceable parts inside the 8270 chassis. The following
procedures are for qualified service personnel only.
Replacing a Fan in an 8270-600
The following procedure describes how to replace a chassis cooling fan.
Step 1. Disconnect ac power.
Step 2. Remove top cover of the chassis by removing 6 screws.
Step 3. Disconnect fan cable from backplane card. The connector has a latch
that needs to be depressed to release the connector.
Step 4. Slide the fan up out of the fan cage.
Step 5. Slide replacement fan into the fan cage. Orient the fan so that the air
exits the rear of the chassis.
Step 6. Reconnect fan cable to backplane card.
Step 7. Reinstall top cover.
Step 8. Reconnect ac power.
Replacing a Power Supply in an 8270-600
Step 1. Disconnect ac power.
Step 2. Remove top cover of the chassis by removing 6 screws.
Step 3. Remove the four screws that hold the power supply in the chassis.
Step 4. Lift the supply slightly and unplug the ac and dc cables to separate the
power supply from the chassis.
Step 5. Plug the cables into the new supply before inserting it into the chassis.
Step 6. Reinstall the four screws that hold the power supply in the chassis.
Step 7. Reinstall the top cover of the chassis.
Step 8. Reconnect ac power.
Replacing a Fan in an 8270-800
The following procedure describes how to replace a chassis cooling fan. These
fans can be replaced while 8270-800 power is on (hot-plugged).
Step 1. Remove the screw in the bottom right corner of the rear cover.
Step 2. Loosen but do not remove the remaining seven screws that retain the
rear cover.
Step 3. Slide the rear cover to the right and remove it from the chassis.
Step 4. Disconnect the fan cable connector from the fuse panel (see Figure 6-1
on page 6-6) and pull it through the access hole.
Step 5. Remove the four screws retaining the fan guard and the fan.
Step 6. Remove the fan guard and the fan.
Chapter 6. Service Procedures for Qualified Personnel
6-5